hadoop集群环境搭建(2)--双NameNode

╰+攻爆jí腚メ 2022-05-31 06:35 500阅读 0赞

# 环境 #

操作系统：Centos 6.4

jdk: 1.7.79

hadoop: 2.6.4

四台主机：mini01(namenode) +mini02(datanode) +mini03(datanode) +mini04(namenade)

![70][]

# 部署 #

### 一、解压hadoop-2.6.4.tar.gz ###

tar -zxvf hadoop-2.6.4.tar.gz

###     ###

### 二、配置文件修改 ###

修改5个文件：hadoop-env.sh、core-site.xml、hdfs.site.xml、mapred-site.xml、yarn-site.xml

1）修改hadoop-env.sh，配置jdk路径

export JAVA_HOME=/usr/local/jdk1.7.0_79/

2) 修改 core-site.xml

<configuration>
    <property>
    <name>fs.defaultFS</name>
    <value>hdfs://bi/</value>
    </property>
    <property>
    <name>hadoop.tmp.dir</name>
    <value>/home/hadoop/hdpdata</value>
    </property>
    <property>
    <name>ha.zookeeper.quorum</name>
    <value>mini01:2181,mini02:2181,mini03:2181</value>
    </property>
    </configuration>

3）修改 hdfs.site.xml

<configuration>
    
    <property>
    <name>dfs.nameservices</name>
    <value>bi</value>
    </property>
    
    <property>
    <name>dfs.ha.namenodes.bi</name>
    <value>nn1,nn2</value>
    </property>
    
    <property>
    <name>dfs.namenode.rpc-address.bi.nn1</name>
    <value>mini01:9000</value>
    </property>
    
    <property>
    <name>dfs.namenode.http-address.bi.nn1</name>
    <value>mini01:50070</value>
    </property>
    
    <property>
    <name>dfs.namenode.rpc-address.bi.nn2</name>
    <value>mini04:9000</value>
    </property>
    
    <property>
    <name>dfs.namenode.http-address.bi.nn2</name>
    <value>mini04:50070</value>
    </property>
    
    <property>
    <name>dfs.namenode.shared.edits.dir</name>
    <value>qjournal://mini02:8485;mini03:8485/bi</value>
    </property>
    
    <property>
    <name>dfs.journalnode.edits.dir</name>
    <value>/home/hadoop/journaldata</value>
    </property>
    
    <property>
    <name>dfs.ha.automatic-failover.enabled</name>
    <value>true</value>
    </property>
    
    <property>
    <name>dfs.client.failover.proxy.provider.bi</name>
    <value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
    </property>
    
    <property>
    <name>dfs.ha.fencing.methods</name>
    <value>
    sshfence
    shell(/bin/true)
    </value>
    </property>
    
    <property>
    <name>dfs.ha.fencing.ssh.private-key-files</name>
    <value>/usr/local/.ssh/id_rsa</value>
    </property>
    
    <property>
    <name>dfs.ha.fencing.ssh.connect-timeout</name>
    <value>30000</value>
    </property>
    <property>
    <name>dfs.replication</name>
    <value>2</value>
    </property>
    </configuration>

4）修改  mapred-site.xml

<configuration>
    <property>
    <name>mapreduce.framework.name</name>
    <value>yarn</value>
    </property>
    </configuration>

5） 修改 yarn-site.xml

<configuration>
    
    <property>
    <name>yarn.resourcemanager.ha.enabled</name>
    <value>true</value>
    </property>
    
    <property>
    <name>yarn.resourcemanager.cluster-id</name>
    <value>yrc</value>
    </property>
    
    <property>
    <name>yarn.resourcemanager.ha.rm-ids</name>
    <value>rm1,rm2</value>
    </property>
    
    <property>
    <name>yarn.resourcemanager.hostname.rm1</name>
    <value>mini02</value>
    </property>
    <property>
    <name>yarn.resourcemanager.hostname.rm2</name>
    <value>mini03</value>
    </property>
    
    <property>
    <name>yarn.resourcemanager.zk-address</name>
    <value>mini01:2181,mini02:2181,mini03:2181</value>
    </property>
    <property>
    <name>yarn.nodemanager.aux-services</name>
    <value>mapreduce_shuffle</value>
    </property>
    </configuration>

6） 将配置文件全部拷贝到mini02,mini03,mini04上进行覆盖

### 三、Zookeeper集群配置及部署 ###

[点击查看Zookeeper集群配置部署][Zookeeper]

zookeeper集群部署在mini01,mini02,mini03上

在三台机器上依次执行./zkServer.sh start

使用jps命令查看是否都有QuorumPeerMain进程，使用./zkServer.sh status查看状态是否正常（leader,follower）

### 四、启动hadoop集群 ###

1） 格式化hdfs

在mini01上运行:

hadoop namenode -format

将mini01上“/home/hadoop/hdpdata”内容拷贝到另外一个namenode（mini04）相应目录上

2）格式化zkfc

hdfs zkfc -formatZK

3) 启动hdfs

在mini01上运行：

./start.dfs.sh

4) 启动yarn

在mini02上运行：

./start-yarn.sh

5) 验证

浏览器分别输入mini01:50070;mini02:50070

![70 1][]

![70 2][]

[70]: /images/20220531/da68f5e1ecb04ac28fe475e914589c86.png
[Zookeeper]: http://blog.csdn.net/z644041867/article/details/79224606
[70 1]: /images/20220531/977ddb7899f84666b4fd27c67543126b.png
[70 2]: /images/20220531/4f923f701aa34c0c993979f9b11b236e.png